Conventional Vacuum Systems
Liquid Vacuum Chemical Feed Systems
Information & Features

LF Series

  • Chemical is fed under vacuum
  • More reliable than metering pumps
  • Usable to feed a variety of liquid chemical solutions (Including Sodium Hypochlorite, Sodium Bisulfite and others)
  • Available feed rates up to 10 GPM
  • (12.5% Sodium Hypochlorite Calculations): GPM x 0.012 x PPM = GPD

Chlorine Dioxide (ClO2) Ejector Assemblies

  • Up to 120 GPH (2 GPM) liquid chemicals & 500 PPD (10 Kg/h) gas
  • Specially designed for chlorine dioxide feed
  • Ejector nozzle & throat available in multiple materials (PVC, PVDF and PTFE)
  • Incorporates a large top body with mixing chamber for chemical mixing prior to injection
  • Three 1/2″ FPT inlet connections
Product Downloads
Videos

Vacuum Liquid Feed System

Dual PAC Feed System

Sodium Hypochlorite Feed Systems

Related Products

OV-110 Omni-Valve

Automatic Control Valve (OV-110 Omni-Valve)

  • Multiple control options
  • MODBUS communication
  • Feed rates up to 12.5 GPM

Learn More

OV-1000 Omni-Valve

Automatic Control Valves (OV-1000 Omni-Valve)

  • Multiple control options
  • MODBUS communication
  • Feed rates up to 12.5 GPM
  • Greater accuracy

Learn More

Vacuum Liquid Feed Systems for Water Treatment

Municipal utilities, industrial facilities, and commercial operations rely on carefully controlled chemical feed processes to disinfect water, neutralize contaminants, and maintain proper water chemistry, and accurate chemical dosing is at the heart of these operations. Even small variations in dosing rates can affect treatment performance, regulatory compliance, and system safety. For this reason, treatment facilities depend on vacuum liquid feed technology to deliver chemicals at consistent, precise feed rates.

Read More

By using a vacuum-driven delivery method, these systems regulate chemical flow safely and accurately while minimizing the risk of leaks or uncontrolled chemical release. Vacuum-based systems also allow operators to maintain stable dosing levels, improve system reliability, and support efficient water treatment processes.

Hydro Instruments manufactures dependable vacuum liquid feed systems designed for simplicity, durability, and precise control. Whether used in municipal plants or industrial treatment systems, this equipment supports safe chemical handling practices while achieving accurate feed rates. Explore our informational guides on how vacuum liquid feed systems work, or contact our team today to request a quote.

How Vacuum Liquid Feed Systems Improve Water Treatment Operations

Water treatment processes often rely on the precise delivery of chemicals such as chlorine, sulfur dioxide, ammonia, or other treatment agents. Delivering these chemicals safely while maintaining accurate feed rates is critical to ensuring effective treatment and regulatory compliance. Vacuum liquid feed systems provide a reliable method of controlling chemical delivery while improving safety and operational performance.

Built-In Safety Mechanism

Unlike pressure-based systems, vacuum feed technology operates under negative pressure conditions. This means chemicals are only drawn into the system when a vacuum is present, which significantly reduces the potential for accidental leaks. If a break or malfunction occurs in the system, the vacuum is lost, and the chemical flow immediately stops. This built-in safety feature helps protect personnel, equipment, and the surrounding environment.

Improved Dosing Accuracy

Vacuum liquid feed systems provide precise control over chemical flow rates, allowing operators to fine-tune feed levels based on treatment requirements. Maintaining accurate dosing helps treatment facilities achieve consistent water quality while avoiding chemical overfeed or underfeed conditions.

Efficient Operational Control

Operators can easily monitor system performance and adjust feed rates as needed to respond to changing water conditions. This flexibility allows water treatment professionals to maintain optimal treatment results while minimizing chemical waste and operational disruptions.

Applications for Vacuum Liquid Feed Systems in Water Treatment

Vacuum liquid chemical feeders are widely used across the water treatment industry due to their reliability and safety. Some of the top applications where precise dosing is required and these systems deliver excellent control include:

Drinking Water Treatment Plants

Municipal drinking water facilities rely on accurate chemical dosing to ensure safe and effective water disinfection. Vacuum liquid feed systems are commonly used to deliver disinfectants and other treatment chemicals that help eliminate harmful microorganisms and maintain water quality.

Wastewater Treatment Facilities

Wastewater treatment plants require carefully controlled chemical dosing to neutralize contaminants and support treatment processes. Vacuum liquid chemical feeder equipment helps operators maintain precise chemical delivery for processes such as dechlorination, odor control, and disinfection. These reliable chemical feed systems are particularly beneficial for protecting downstream water resources and ensuring environmental compliance.

Industrial Process Water Treatment

Many industries, such as food processing, manufacturing, and energy production, rely on water treatment systems to maintain water quality for manufacturing processes. And vacuum liquid feed systems provide a dependable way to introduce treatment chemicals into process water systems.

Cooling Towers

Cooling tower systems require chemical treatment to control biological growth, scaling, and corrosion. These vacuum liquid feed systems allow facility operators to maintain proper chemical concentrations within cooling water systems.

Chemical Dosing Systems

Vacuum liquid feed technology is also widely used in general chemical dosing systems across various industries. Facilities that require controlled chemical injection for water conditioning, pH adjustment, or specialty treatment applications rely on vacuum feed systems to maintain safe and reliable operation.

The Benefits of Hydro Instruments’ Vacuum Liquid Feed Equipment

Our vacuum liquid feed systems are engineered to provide dependable operation while simplifying maintenance and system management.

Durable Construction

Components are manufactured using high-quality materials that are designed to withstand the demanding conditions commonly found in water treatment environments. This robust design helps ensure long service life and dependable performance.

Simple Design

By focusing on straightforward mechanical operation, these systems minimize complexity and reduce the potential for equipment failure.

Ease of Maintenance

Water treatment facilities require equipment that can be serviced quickly to minimize downtime. Our vacuum liquid feed systems are designed with accessible components that allow technicians to perform inspections, adjustments, and routine maintenance efficiently.

Dependable Performance

Facilities around the world rely on these systems to maintain consistent chemical feed rates and stable water treatment operations. Reliable dosing performance helps ensure that treatment goals are achieved while supporting safe facility operation.

The vacuum liquid feed system is also designed to work well with the CV-230 chlorine control valve, the CS-110 automatic changeover system, chlorine pressure reducing valves, and other controls.

Warranty Coverage

In addition to quality manufacturing, Hydro Instruments provides excellent warranty coverage for our equipment. This coverage reflects our commitment to delivering products that meet high standards for reliability and performance.

Large Inventory & Fast Shipment

Water treatment facilities often require equipment quickly to maintain uninterrupted operations. With extensive inventory available, Hydro Instruments can ship many products promptly to help facilities maintain operational continuity.

Request Information on Vacuum Liquid Feed Systems Today

Hydro Instruments offers a complete range of vacuum liquid feed systems designed to meet the needs of modern water treatment facilities. With durable construction, straightforward operation, and dependable performance, these systems help operators maintain effective chemical dosing while supporting safe facility operations.

If you are looking for dependable vacuum liquid feed equipment for your water treatment system, our experts can help you evaluate your application and select the right system to meet your facility’s specific requirements.

Contact Hydro Instruments today to request more information about our vacuum liquid feed systems or to receive a quote.